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| Description: Mesozoic Era: Age of the Dinosaurs At the close of the Mesozoic, many reptile groups became extinct A few types survived, including the turtles, snakes, and lizards Some reptiles returned to the sea Cenozoic Era: Age of Mammals Mammals replace reptiles as dominant vertebrate life forms on land Two groups evolved marsupials placentals One tendency was for some mammal groups to become very large Late Pleistocene extinctions eliminated these larger animals Picture Stats: Views: 293 Filesize: 1.86MB Height: 777 Width: 1200 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39641 |